This new autism genetics study could help explain why it's such a huge spectrum

Genes responsible for a number of autism's characteristics come in two varieties, which could help explain not only the condition's diversity, but also how it's inherited.

A new study on the genetics behind the disorder has revealed the kinds of mutations associated with lower IQ are also linked with impeded motor skills.

What's more, the severity of these mutations might also explain why many aspects of autism spectrum disorder (ASD) are more pronounced in some than in others.

In most cases, a diagnosis for ASD is based on a mix of social and physical behaviours, including difficulties in communicating and sensory processing, repetitive movements, and impeded motor functions.